Method of cleaning reversing-furnaces.



Patented Aug. 5, 1913.

2 SHEETS-SHBET l.

P. G. PAHERTY.

METHOD. 0}? CLEANING REVERSING FURNACES.

APPLICATION FILED 0013- 16, 1912. 1,069,657.

zlzggnfiy/ 7 w a WITNESSES 4 UNITED STATESQEEENT ()FFIOE.

' PATRICK e. FAHEBTY, or MUNH'ALL, PENNSYLVANIA.

METHOD or CLEANINGnnvnnsmc-rummcns.

To all whom it may concern:

Be it knownthat I, PATRICK G; FAPEERTY, a resident of Munhall iii the county of Al? legheny and State ofl ennsylvania, have in- 6 vented-anew and useful Methodof Cleaning Reversing-Furnaces, of which'thefollowing I is a full, clearand exact description, refer- .enc'e. bein liad to the accompanying drawings, iniv ich 1 'tion of a; reversing furnace, showing one 1 if: formiof myimp'roved furnace, in which my method can be carried'out, said section being-ftakeii on the line II' of Fig. 2. Fig. 2 '15;. is a1 :partial sectional view on the line I I-II of;i'g-.-1\; 1iig. 3 is also-a partial sectional yiew'fon the line 111 -111 of Fig. 1; Fig. 4 {8 a pcrsiective view of one form of cleaning g. for owing outthe material deposited J-2Q'..Qfl;-the checker work} and Fig. 5is aper- :is' \mvention relates, to an improved ethodof'cleaning the checker work of a re- -.VetSing and of'removing the matefroni'thejfurnace without tearing down portion thereof.

' ,t isfwell known to those familiar with the artihat the life of a furnace of this character is dependent upon the checker work,

'and as soon as the checker work becomes clo or filled u the furnace must practifcal y berebuilt, w ichis-not only expensive,

Tbut alsotakes considerable time to reconstruct the same, and after it has been reconstructed the furnace must be fired for considerable time before it can be used for melt-' ing metal. Itis also well knownto those familiar with the art that as soon as any amount of. material is deposited on the checker work, the furnace will not work properlyfas" its-has a tendency to work too 0t and conse%uently burn out the furnace,

- as well as the ath. 1

By.- the use of my improved method of cleaning furnaces, I am enabled to overcome all of the former objections, withou'; keeping the furnace out of commission for any lengt of time.

The precise nature of my invention will be best understood by reference to the accompanying drawings, which will now be described,1t being premised, however, that various changes may be made in the details of construction of the apparatus without dogure 1 is a sectional-plan view of a por-.

tive view of a portion of the tool shown v Specification ot Letters Patent. Application flled October 16, 1912; Serial No. 726,096.

, ratented Aug. 5, 1913.

parting from the spirit and scope of my invention, as defined in the appended claims.

Referring to the accompanying drawings, 4 the numeral 2 designates regenerative-cha'm- L bers of the furnace. The lower portion of each of these chambers is divided into a plurality of gutters 3 by means of longitud nal piers 4. 'Supportedon the tops of these piers f. 4 and pro ections 5, extending inwardly from the walls of the chambers are tiles 6, 3 and? are checker work tiles of theusual shapeand size, which are supported on the tiles 6.- Extending along the front of each of the chambers 2 is a catch basin 8, which is provided with a sloping gutter 9, and adjacent to the front end of each of the gut!- ters 3, which slope from, the rear end of the chamber toward the gutter). 9. 10 designates a gutter ineach catch basin 8 leading from the central portion ofthe gutter 9 to a drain 11 on the outside of the-walls forming the chambers 8, and leading from these drains 11 are pipes 12 which extend to any suitable point to which the material removed from the 'checlcer work is to be deposited. Extending through the outer walls of the regenerative chambers are openings' 13, which are closedby means of bricks or tiles when the furnace isiii operation, and 14 are openings through the walls t in alinement with the openings .13. 13 are clean outopenings extending through the walls of the chambersforming the drains 11, which are also closed; when t e'furnace is in operation. In Figs. 4 and 5, I haveshown a tool for cleaning the checker work which comprises a nozzle having a top plate 15, to which is connected it flexible tube 16 leading from any source of air-pressure supply. Con-.

nected to the plate 15 is a weightedmemher 17, which is provided with. a' plurality of projections 18, and formed betweenthese projections 18- are radiall extending ,recesses 19, which form out et openings fol;

the air between the top plate 15 and the weighted member 17. When it is desired to clean the checker work, the nozzle is dropped down between the bricks forming the checker work, and asthe air is blown outwardly in a horizontal line in radiai di- Portions, the material deposited on the tops 1 of the tiles forming thcchecker \vorkwill. be blown therefrom and will fall into the gutters -l in the bottom of the chambers. tier the material has all been blown from no vto the checker work, the bricks in the opening 13 are removed and a nozzle, such as shown at in Figs. l and 2, and which nozzle is connected to a water supply pipe 2l,.connected to a suitable water supply. This nozzle is first insertedin the opening 13 'adjacentto. the catch basin, and all of the material in the first gutter 3 between the opening 13 ,.and the gutter 9 is washed into the catch basin. The nozzle is then inserted through the first-opening 14: in the first division wall 3 and the material in this gutter between the opening lat and the gutter 9 is Washed into the catch basin, and thisoperation is repeated until allof the material lying in the gutters 3 at the fronts thereof is washed into the catchbasin. The nozzle is then inserted through the next series of 20 holes to wash the material-between them and the'catch'basin into the catch basin, and

.so on until all of the material has been washed from the gutters below the checker work, the material being carried from the gutter 9 to the point where it is to be deposited through the gutters 10, drains 11 and outlet pipes 12.

l The advantages of my invention result from the provision of a method for cleaning the checkerwork of a reversing furnace by means of an air blast and for moving the refuse therefrom without tearing down any portion otthe furnace.

Thefurnace structure disclosed in this application formsthe subject matter off'a divisional application Serial No. 757,759,'fi1ed March 31, 1913.

I claim:

1. The method of cleaning the checker work of aregenerative open-hearth furnace, which consists in directing a blast of air against the deposit on the tops of the bricks of the checker work to dislodge it and permit it to fall to the bottom of the checker work chamber, and then flushing theabottom of the checker work chamber with water'to 'wash out said deposit,.substantially as described.

2. The method of cleaning the checker work of a regenerative furnace, which consists in directing blasts of air in horizontal directions over the tops of the bricks of the checker work to blow the "deposit to the hottom of the checker work chamber, and then as described.

.In testimony whereof, I have hereunto set my hand.

" PATRICK G; FAHERTY. Witnesses JESSE B.- HEnLEn, H. M. CORWIN. 

